[解題] 國小資優數學
1.年級：國小高年級
2.科目：數學
3.章節：圓面積
4.題目：http://ppt.cc/TmyK
5.想法：
除了利用找出圖中與圓弧相交的直角三角形兩邊長
分別為12√2,並拼成正方形減去1/4圓弧求面積外
是否有其他適合小學生的解題方式? 謝謝!
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